OLFA CORPORATION

OLFA CORPORATION Patent applications

Patent application number

Title

Published

20130074671

CUTTER KNIFE - A cutter knife includes a cutter body 1 having a sliding contact portion 20 making sliding contact with a cutting object, a cutter member 2 having a cutting blade 22 for cutting the cutting object, a holder member 3 holding the cutter member 2 with the cutting blade 22 being protruded from the cutter body 1, and a biasing member 4 biasing the cutter member 2 to press the cutting blade 22 against the cutting object with a constant pressure when the sliding contact portion 20 of the cutter body 1 is in sliding contact with the cutting object.

03-28-2013

20120199626

BLADE SNAP-OFF HOLDER - Disclosed is a blade snap-off holder which enables a safe, easy and smooth operation for snapping off a blade tip of a cutter knife. The holder has an insertion opening on its wall. A tip of a knife blade inserted through the opening is received in a groove of a rotary member located inside the holder. The rotation axis of the rotary member extends substantially parallel to the score of the knife blade. When the rotary member is rotated and a bending force is applied to the tip of the knife blade, the blade tip received in the groove of the rotary member can be snapped off. A user only grasps this holder in one hand and rotates the operation lever with a finger, and then a blade tip can be snapped off cleanly and easily without any subtle control of a force.

08-09-2012

20080201960

ROTARY CUTTER KNIFE WITH DIVIDED GUARD MEMBERS - A rotary cutter knife provided with a guard member, which extends beyond the outer edge of the rotary blade to enhance the safety. The guard member is divided into two sub-members, which can independently move between an extended position where an outer profile of the sub-member extends beyond an outer edge of the rotary blade and a retracted position where the outer profile of the sub-member is retracted such that the outer edge of the rotary blade is exposed. Thus, the cutting edge of the rotary blade is not exposed in the area where the cutting operation is not performed, and the cutting edge is exposed only in a limited area associated with the cutting operation, such that the highly enhanced safety is realized.